Babcock test mixer



ug. 29, 1950 G. F. MASSEYI BABcocx 'r1-:sT MIXER 2 sneegssheet 1 Filed Jan. 6, 1947 2q w19 e Aug. 29, 1950 G. F. -MAssEY 2,520,556

BABcocx TEST MIXER Filed Jan. e, 1947 2 sheets-shea 2 [11 l'eutor George FI Massey zwaazm ana/Wawy ,3mm

Patented Aug. 29,2195() UNITED STATES PATENT OFFICE Y BAoooK 'rEs'r MIXER George F'. Massey, Fond au Lac, Wis.

Application January'c, 1947, serial No. 720,434

5 Claims. 1 j

'I'he present invention relates to new and useful improvements in mixing devices and more particularly to a device of this character for use -in mixing acid with milk or cream in Babcock test bottles.

An important object of the present invention is to provide a device of this character in which a number of test bottles may be mixedsimultaneously without requiring individual handling of the bottles during mixing of the contents thereof.

A further object of the invention is to provide a mixing tray in which a carrying tray for the test bottles is placed and providing means for oscillating the mixing tray in an elliptical motion to more effectively and thoroughly accomplish the mixing of the acids and milk.

A still further object of the invention is to provide means for supporting the bottles in an inclined position in the mixing tray to reduce danger of the milk and acid being forced up into the neck of the test bottles.

A still further object of the invention is to provide-an apparatus of this character of simple and practical construction, which is efficienty and reliable in operation, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals -refer to like parts throughout, and in which:

Figure 1 is a vertical sectional view of the motor cabinet and mixing tray operatively mounted thereon;

Figure 2 is a top plan View;

Figure 3 is a side elevational view with parts broken away and shown in section;

Figure 4 is a perspective View of one of the carrying trays for the test bottles, and

Figure 5 is a fragmentary side elevational View of the suction cup legs for supporting the cabinet.

Referring now to the drawings in detail, Wheref in for the purpose of illustration I have disclosed a preferred embodimentr of the invention, the numeral 5 designates a cabinet of predetermined shape and size and preferably constructed of sheet metal and formed with outwardly projecting flanges or brackets 6 at its corners to the underside of which are secured suction cups 1 for supporting the cabinet on a suitable supporting surface against sliding movement.

The cabinet provides a motor housing in which an electric motor 8 is mounted for driving a vertical shaft 9 journaled in a gear housing III by means of a conventional reduction gearing II.v

The shaft 9 extends upwardly through the top I2 of theV cabinet and is formed at its upper end with a crank I3.

A mixing tray designated generally at I4 includes a bottom I5 to the underside of which a socket I6 is secured for receiving the upper end of the crank I3 for rotation therein.

The mixing tray I4 also includes `side walls I1 which are movable inwardly and outwardly at the edges of the bottom I5 by'means of tongues I8 projecting inwardly at the lower edges of the side walls and formed with slots I9 in which bolts and wing nuts 20 carried by the bottom I5 are received to secure the sideA walls in horizontally adjusted position on the bottom I5 inwardly or outwardly with respect thereto to adjust the sides of the mixing tray. g

To one of the side walls I1 are secured upper and lower angle brackets 2| and 22 forV supporting a vertical pivot pin 23 and to which one end of an oscillating arm 24 is pivotally attached.. The other end of the arm 24 is pivoted on an upstanding bolt 25 suitably securedl to the top 'I2 of the cabinet adjacent one side'thereof. The side wall I1 and the side of the mixing tray I4 opposite from the arm 24 is provided on its inner side with an angle iron strip 26 forming a shelf for supporting one edge of a carrying tray 21 in an inclined position when placed in the mixing tray I4 as shown in Figure 1 of the draw- 1ngs.

To the upper edge of the side wall provided with the shelf 26 is an upwardly extending wall extension 28 hingedly connected at its lower edge to the upper edge of the wall I1 by a spring hinge 29 of conventional construction and arranged to urge the extension 28 inwardly against the adjacent side of the carrying tray 21. The upper edge of the extension 28 is formed with an inwardly and downwardly extending ange 38 which is inclined corresponding to the adjacent side of the carrying tray to provide close tting engagement therewith.

The wall of the tray opposite from the extension 28 and to which the arm 'Z4-is attached is likewise inclined as shown at 3I to conform to the adjacent inclined side of the tray 21.

The carrying tray 21 is provided with intersecting partitions 32 forming a rack within which Babcock test bottles 33 are adapted to be placed to separate the bottles when placed in the tray.

The sloping position of the bottles in the trayy 21 will prevent forcing of the milk and-acidin` the bottles upwardly into the neck of the bottles when heat is generated bythe aeid'aslit;v

mixes with the milk.

The bottles are held in the tray 21 in a, prearranged order to prevent error in test identica..

tion and the mixing tray I4 may be adjusted to aceornmodatecarrying vtrays! 2-1 of yvarious. sizes accordance with. the number of bottles-to be tested.v g

In. view of theforegoing description. taken'in conjunctionwith the acGQmpanying drawings it is believed that a clear understanding oi the dee vice willbequite apparent to thoseskilledzin this art.,` A. moredetailed description is; accordingly deemed unnecessary,

It is to be un dersi.oo1;l= however, that even though there isherein shownand described a preierrcd embodiment. .of the inventnrthe vsame is susceptible to. certain I.changes fully compre? hended. by, thespirit of the.imzention` asfherein described-and the scope,v of thelanpended claims.

1. A mixer for testbottles of the class 'd e-v scribed and includingy an agitating tray having horizontally movable-walls to adjust the area of the tray, a carrying tray, means carried by one. of the walls, for supporting the" carrying Vtrayifi'n the agitating-lv'dyV in an inclined pDStQIQa mail.'

f of the -opposed walls of the agita'ting tray"hav=v extension on one of the walls of the agitating tray, inclined internal portions on said extension and on an opposed wall of the agitating tray atly bearing against upper and lower end portions of the carrying tray to tightly hold the trays one within the other.

3. A mixer for test bottles of the class described and including an agitating tray having a oor and walls, a carrying tray, means carried by one 7of .tha-walls for supportingA the carrying tray inthe agitating tray-in arrinclined-positiony a spring biased vertical extension on one of the walls of the agitating tray, inclined internal portions on said extension and on an opposed wall of the agitating tray atly bearing against upper and lower-"iendeportions of the carrying tray to tightly hold thejtrays one within the other.

4. Ina mixer for test bottles, a frame, an agitatingtray, a vertical shaft having a crank connected to the bottom of the tray for oscillating the trayg.saidv crank being vrotatably supported-in the irarnaand, an arm pivotally connected to and.; between. Vthe. frameand the tray to guidethe tray in ana el'ptialpatm a bottle Carr-ying means mounted at an angle within said agitating tray so that bottles,therein are inclined-to the verticalf.

5. In @mixer for test bottles, a, frame, anagieY REFERENCES. CTED.

The.'followinggereferences are. of recordin the file .of` this-'patent v Nrhnler Name Date 775,659 Wise' g Nov. 15,1904' 856,316,319 CampY etal. June 11, 1907 1,085,450" Lop'ez" Jan. 27,1'19145 1,343;091 Shearer June, lj 20 1,. 35525330`V Tylern Sept?. 1920 2,339,092 li/Ieltzez` Jan. 11, i944- v2345,130, Latham' Mar. 28, 19,44 

